メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((136.920973391923 35.0833922936037, 136.920552370648 35.0848254815612, 136.918752798163 35.084700766877, 136.918838649097 35.0842877466872, 136.918954244023 35.0837825974894, 136.919058915888 35.0832842571246, 136.919149272123 35.0829468839179, 136.919114380667 35.0829475874227, 136.919199452086 35.0825501990647, 136.9211643552 35.0827289020507, 136.920973391923 35.0833922936037)) ^^http://www.opengis.net/ont/geosparql#wktLiteral